EP 3160914 A1 20170503 - LOW ATTENUATION FIBER WITH VISCOSITY MATCHED CORE AND INNER CLAD
Title (en)
LOW ATTENUATION FIBER WITH VISCOSITY MATCHED CORE AND INNER CLAD
Title (de)
FASER MIT GERINGER DÄMPFUNG MIT VISKOSITÄTSANGEPASSTEM KERN UND INNERER PLATTIERUNG
Title (fr)
FIBRE À FAIBLE ATTÉNUATION COMPORTANT UN COEUR À VISCOSITÉ AJUSTÉE ET UNE GAINE INTÉRIEURE
Publication
Application
Priority
- US 201462016192 P 20140624
- US 2015036930 W 20150622
Abstract (en)
[origin: US2015370010A1] A single mode optical fiber having a core made from silica and less than or equal to about 6.5 weight % germania and having a maximum relative refractive index Δ1MAX. The optical fiber also has an inner cladding surrounding the core and having a minimum relative refractive index Δ2MIN. A difference between a softening point of the core and a softening point of the inner cladding is less than or equal to about 20° C., and Δ1MAX>Δ2MIN. The single mode optical fiber may also have an outer cladding surrounding the inner cladding made from silica or SiON. The outer cladding has a maximum relative refractive index Δ3MAX, and Δ3MAX>Δ2MIN. A method for manufacturing an optical fiber includes providing a preform to a first furnace, the preform, drawing the optical fiber from the preform, and cooling the drawn optical fiber in a second furnace.
IPC 8 full level
C03C 3/06 (2006.01); C03B 37/02 (2006.01); C03C 13/04 (2006.01); G02B 6/036 (2006.01)
CPC (source: CN EP US)
C03B 37/02 (2013.01 - EP US); C03B 37/027 (2013.01 - US); C03B 37/02718 (2013.01 - CN EP US); C03B 37/02727 (2013.01 - CN EP US); C03C 3/06 (2013.01 - CN EP US); C03C 13/045 (2013.01 - CN EP US); C03C 13/046 (2013.01 - US); G02B 6/02014 (2013.01 - EP US); G02B 6/03627 (2013.01 - EP US); C03B 2201/12 (2013.01 - CN EP US); C03B 2201/20 (2013.01 - CN EP US); C03B 2201/31 (2013.01 - CN EP US); C03B 2203/223 (2013.01 - CN EP US); C03B 2203/23 (2013.01 - CN EP US); C03B 2203/24 (2013.01 - CN EP US); C03B 2205/55 (2013.01 - CN EP US); C03B 2205/56 (2013.01 - CN EP US); C03C 2201/12 (2013.01 - CN EP US); C03C 2201/31 (2013.01 - CN EP US); C03C 2213/00 (2013.01 - US)
Citation (search report)
See references of WO 2015200191A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
US 2015370010 A1 20151224; US 9658394 B2 20170523; CN 106536434 A 20170322; CN 106536434 B 20200807; EP 3160914 A1 20170503; JP 2017524979 A 20170831; US 10228509 B2 20190312; US 2017219770 A1 20170803; WO 2015200191 A1 20151230
DOCDB simple family (application)
US 201514728132 A 20150602; CN 201580034235 A 20150622; EP 15756258 A 20150622; JP 2016574934 A 20150622; US 2015036930 W 20150622; US 201715485619 A 20170412